The coolant gas in a fridge takes heat from the fridge and "pumps" or "dumps" it in the outside. The back of a working fridge is usually quite warm, and one source of that heat is the contents of the fridge.
Electrical energy is used to pump the coolant round the various components of the fridge's cooling system. It also possibly powers any lights in the fridge. That funny whirring sound may well be a motor, and motors are driven by electrical energy. If your power goes off, then your fridge stops fridging. all the stuff in the fridge warms up to room temp slowly, and you may end up with some "too warm" grub.
Centripetal acceleration can be calculated with the formula F=v^2/r
Substituting the values in, we get:
a=20^2/50
=8
Therefore the magnitude of the centripetal acceleration of the car is 8 ms^-2
First, you must know that the statement "<span>An object at rest tends to stay at rest. An object in motion tends to stay in motion unless acted upon by an outside force." is true, because it is the first Law of Newton or inercy law.
what outside force acts on a baseball when it is thrown straight like a pitcher pitching a ball?
After the ball leaves the pitcher's hand, it is subject only to the gravitational attraction of the Earth. That is why the pitcher has to give the appropiate impulse in order to the ball reaches the point that he and the catcher want.
What about if you threw it straight into the air?
It is the same thing. The only force would be the gravitational attraction of the Earth.
What about if you threw the baseball in outer space. Would there be any forces to slow that down?
In outer space, at the beginning the baseball would be very far from of other massive objects to feel their gravitational field, so there would not be any forces to slow it down. Although eventulally, after many light-years, it would enter the gravitational field of a galaxy or other massive body and it would attract it.
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Answer:
Gravitational force
Explanation:
Gravitational force is force of attraction which acts between any two bodies having mass. It is a fundamental force and is the weakest of all the fundamental forces.
Katie and Jon have force of attraction between them and it is the gravitational force.
Electrostatic force acts between charged particles. It can be attractive or repulsive in nature.
